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Source:
Colnect
Issued by:
Greenland
Function:
postage
Date:
11/21
/
1963
Issue:
Bohr theory 50th
Denom:
60o
Color:
Design:
Watermark:
unwmk
Perf:
Catalog value:
Prev:
35o
Next:
11/26/1964 35o d=Kleinschmidt
External links:
Colnect 44827-.._of_Niels_Bohr
Record of changes